The wind rose is a conventional diagram for characterizing both the direction and frequency of wind around a project site. This graphic is commonly included in a climate data analysis.
Some software platforms such as Climate Consultant, one of several free energy analysis tools developed and released through the University of California, Los Angeles (UCLA) Department of Architecture & Urban Design, can generate wind roses for any specific range of time based on the climate data file loaded into the program (the U.S. Department of Energy manages an international database of climate data files through their Office of Energy Efficiency & Renewable Energy).
|Annual wind rose for Indianapolis, Indiana, USA, generated by Climate Consultant 6.0 Beta.
Climate Consultant is available through the Department of Architecture and Urban Design at the University of California, Los Angeles.
Through its graphic clarity, the wind rose allows individuals to quickly determine the relative direction and frequency of winds at a weather station from which the data was recorded.
However, there are two common caveats with using wind roses for a project’s site analysis of energy flows.